CN212091649U - Waste gas washing tower - Google Patents
Waste gas washing tower Download PDFInfo
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- CN212091649U CN212091649U CN202020400375.8U CN202020400375U CN212091649U CN 212091649 U CN212091649 U CN 212091649U CN 202020400375 U CN202020400375 U CN 202020400375U CN 212091649 U CN212091649 U CN 212091649U
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Abstract
The utility model discloses a waste gas washing tower belongs to the scrubbing tower field. The washing tower comprises a washing tower body, a spraying pump, an alkaline sewage treatment tank, a circulating pump and an acid liquor storage tank, wherein a washing area of the washing tower body and a liquor storage area positioned at the lower part of the washing tower body are provided, a packing layer is arranged in the washing area, and an air inlet is arranged on the side wall of the washing tower body below the packing layer; the water inlet of the alkaline sewage treatment tank is communicated with the liquid storage area, the water outlet of the alkaline sewage treatment tank is communicated with the inlet of a spray pump, and the outlet of the spray pump is communicated with the washing area above the packing layer; the inlet of the circulating pump is communicated with the liquid storage area, and the outlet of the circulating pump is communicated with the washing area above the packing layer; and the outlet of the acid liquor storage tank is connected with the side wall of the washing tower body. The utility model discloses purifying effect to acidics, ammonia class and sulphur class waste gas is splendid, and can handle scrubbing tower filler and washing liquid automatically for self work efficiency improves greatly.
Description
Technical Field
The utility model belongs to the scrubbing tower field, more specifically say, relate to a scrubbing tower.
Background
The washing tower is a novel gas purification treatment device. It is produced by improving on the basis of a floatable filler layer gas purifier, and is widely applied to the pretreatment in the aspects of industrial waste gas purification, dust removal and the like, and the purification effect is good. With the stricter environmental policy, the importance of the scrubber is very important for various industrial productions, especially for plants with large exhaust emission, and the working efficiency of the scrubber is also very important. The waste gas treatment effect of the efficient washing tower can be suitable for the waste gas discharge speed of a plurality of small waste gas discharge devices or a single large waste gas discharge device, so that the number of the washing towers is reduced, and the cost is saved. Therefore, some new biological washing towers are also available on the market.
For example, the Chinese patent application number is: CN201821293135.1, published date: patent literature of 2019, 7 and 16 discloses a washing tower, which comprises a tower body, a sand filter tank, a spraying device and a circulating water pump, wherein a water storage tank is arranged at the bottom of the tower body, the spraying device is arranged inside the tower body, the sand filter tank, the spraying device, the circulating water pump and the water storage tank form a circulating loop, the water storage tank is connected with one end of the sand filter tank through the circulating water pump, and the other end of the sand filter tank is connected with the spraying device. The washing tower has the effect of automatically cleaning the tower body to keep the optimal working condition at any time, but the washing tower does not have the cleaning function on the packing layer, the packing layer is easy to generate a film under long-term work, the purification effect is reduced, particularly for the purification of certain specific waste gases, the spraying liquid generally adopts corresponding acidic or alkaline solution, the film on the packing layer has higher acidity or alkalinity, and the cleaning effect of clean water is not good.
Also, for example, the Chinese patent application number is: CN201820902727.2, published date: 2019, 3 and 1, discloses a self-cleaning washing tower circulating spray system, which comprises a washing tower body, wherein a waste gas inlet is formed in the bottom of the right side of the washing tower body, a circulating water tank is arranged on the left side of the washing tower body and is communicated with the bottom of the left side of the washing tower body, a circulating water pipe is connected to the upper end of the circulating water tank, a first spray discharge pipe and a second spray discharge pipe are connected to the circulating water pipe, the first spray discharge pipe and the second spray discharge pipe both extend into the inner cavity of the washing tower body, the first spray discharge pipe is positioned at the upper end of the second spray discharge pipe, a backwash water pipe is connected to the upper end of the circulating water tank, cleaning fluid can be introduced into the circulating water pipe through the backwash water pipe and then flows back to the circulating water tank from the circulating water pipe through the backwash water pipe, so that the backwash effect on the circulating water pipe is achieved, and the problem that the circulating water pipe of, however, the problem that the filler layer is not cleaned exists, the existing washing tower is basically processed manually, the efficiency is extremely low, and even if the washing tower automatically cleans the filler, the problem that the cleaning effect is not good and the washing tower cannot be applied to special spraying liquid exists.
Disclosure of Invention
1. Problems to be solved
The clearance effect to current exhaust gas washing tower is not ideal, influences self work efficiency's problem, the utility model provides a exhaust gas washing tower is splendid to the purifying effect of acidics, ammoniacal and sulphur class waste gas, and can handle washing tower filler and washing liquid automatically for self work efficiency improves greatly.
2. Technical scheme
In order to solve the above problems, the utility model adopts the following technical proposal.
A waste gas washing tower comprises a washing tower body, a washing area of the washing tower body and a liquid storage area positioned at the lower part of the washing tower body, wherein a packing layer is arranged in the washing area, an air inlet is arranged on the side wall of the washing tower body below the packing layer, and the washing tower further comprises a spray pump, an alkaline sewage treatment pool, a circulating pump and an acid liquid storage tank; the water inlet of the alkaline sewage treatment tank is communicated with the liquid storage area, the water outlet of the alkaline sewage treatment tank is communicated with the inlet of a spray pump, and the outlet of the spray pump is communicated with the washing area above the packing layer; the inlet of the circulating pump is communicated with the liquid storage area, and the outlet of the circulating pump is communicated with the washing area above the packing layer; and the outlet of the acid liquor storage tank is connected with the side wall of the washing tower body.
As a further improvement of the technical scheme, the packing layers are provided with a plurality of packing layers which are sequentially arranged in the washing area from bottom to top.
As a further improvement of the technical scheme, at least one spray pipe is also arranged above each packing layer; the outlet of the spray pump is connected with one layer of spray pipe, and the outlet of the circulating pump is connected with the other spray pipe.
As a further improvement of the technical scheme, a plurality of water spray nozzles are arranged at equal intervals along the length direction of the spray pipe.
As a further improvement of the technical scheme, each water jet is provided with a nozzle.
As a further improvement of the technical scheme, the alkaline sewage treatment tank is an activated sludge tank.
As a further improvement of the technical scheme, an outlet of the acid liquor storage tank is connected with the side wall of the washing tower body through a pipeline, and a metering pump is mounted on the pipeline.
As a further improvement of the technical scheme, the air inlet is externally connected with a fan.
As a further improvement of the technical proposal, the device also comprises an air lifting disc; the air lifting disc is arranged in the washing tower body above the air inlet.
As a further improvement of the technical scheme, a demister is arranged at an air outlet of the washing tower body.
3. Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model relates to an exhaust gas washing tower, the characteristic that ingeniously will wash with alkaline and alkaline sewage treatment pond is in the same place, the spray pump directly takes out the alkaline spray liquid of purification back zone from alkaline sewage treatment pond and sprays waste gas, to the acidics, the purifying effect of ammoniacal and sulphur class waste gas is splendid, and the spray liquid after the manifold cycles sprays can get into alkaline sewage treatment pond again and handle and the secondary use, need not to shut down and discharge and change the spray liquid, the work efficiency of washing tower has been improved, especially, increase the acidizing fluid storage tank on this basis, cooperate with the circulating pump, can wash the packing layer when the packing layer produces alkaline tectorial membrane, keep the purifying effect of packing layer, the three combines the use, greatly improved the purifying effect to the acidics, ammoniacal and sulphur class waste gas, the work efficiency of washing tower has been promoted;
(2) the utility model relates to an exhaust gas washing tower, a plurality of packing layers are arranged in the washing area from top to bottom in sequence, the contact area of the spraying liquid and the exhaust gas is increased, and the purification effect of the exhaust gas is enhanced;
(3) the utility model relates to an exhaust gas washing tower, each layer of packing layer is equipped with the shower above, and the equidistant nozzle that is used for spraying spray liquid that is equipped with of shower, on the one hand to the injection of packing layer more abundant, the packing layer is high with the mixed degree of spray liquid, on the other hand makes the spray range of spray water greatly increased, has improved the area of contact with the waste gas to the purifying effect of washing tower to the waste gas has been strengthened effectively;
(4) the utility model relates to a waste gas scrubbing tower, the scrubbing tower body is equipped with the gas lift dish, and the gas lift dish is upwards outstanding to be formed with the blow vent, and the waste gas that the air inlet got into gets into from the below of gas lift dish, flows out from the blow vent top, becomes turbulent state by laminar flow state, and the spray water that falls from the top fully contacts, has increased the area of contact of waste gas and spray water, has improved purifying effect;
(5) the utility model relates to a waste gas washing tower is equipped with the defroster at the gas outlet, can absorb "fog" that has certain moisture, sulphuric acid and sulfur dioxide in the gas and get rid of, further improves the purifying effect to waste gas.
Drawings
FIG. 1 is a schematic diagram of a scrub column;
in the figure: 1. a washing tower body; 11. a liquid storage area; 12. a washing zone; 13. a filler layer; 14. an air inlet; 15. a shower pipe; 2. a spray pump; 3. an alkaline sewage treatment tank; 4. a circulation pump; 5. an acid liquor storage tank; 51. a metering pump; 6. an air lifting disc; 7. a demister.
Detailed Description
The invention will be further described with reference to specific embodiments and drawings.
Example 1
As shown in fig. 1, an exhaust gas scrubber is used to purify exhaust gas discharged in industrial production, and prevent environmental pollution caused by direct discharge of the exhaust gas. The washing tower mainly comprises a washing tower body 1, a spraying pump 2, an alkaline sewage treatment tank 3, a circulating pump 4 and an acid liquor storage tank 5, wherein all devices are combined to work to complete the purification of waste gas, and the specific structure and the working principle of the washing tower are described in detail below.
The washing tower body 1 is a cylindrical structure, a cavity with a certain space is arranged in the washing tower body 1, the cavity is divided into a washing area 12 located on the upper portion of the cavity and a liquid storage area 11 located on the lower portion of the cavity, the washing area 12 is mainly used for purifying waste gas introduced into the washing tower body 1, and the liquid storage area 11 is used for collecting and storing falling spraying liquid. Be equipped with packing layer 13, air inlet 14 and gas outlet in the scrubbing tower body 1, wherein, packing layer 13 has a plurality ofly, from top to bottom arranges in proper order and sets up in washing district 12, and every packing layer 13's top all is equipped with an at least shower 15 for spray the spray to packing layer 13 in, when making waste gas through packing layer 13, can fully contact with the spray of mixing in the packing layer 13, improve the purifying effect to waste gas. A plurality of water jet ports are arranged on the spraying pipe 15 at equal intervals along the length direction of the spraying pipe, and a nozzle for expanding the spraying angle is arranged on each water jet port, so that the spraying liquid can be uniformly and comprehensively sprayed onto the packing layer 13, and the purification effect on waste gas is further improved. The air inlet 14 is arranged on the side wall of the washing tower body 1 below the lowest packing layer 13, and is externally connected with a fan to guide waste gas into the washing tower body 1 through a pipeline. The air outlet is arranged on the wall surface of the washing tower body 1 above the highest packing layer 13, and the air outlet is arranged at the top end of the washing tower body 1 in the embodiment. After entering the tower body from the air inlet 13, the waste gas rises and passes through the multilayer packing layer 13 in sequence, and contacts spray water sprayed by the spray pipes 15, the packing layer 13 and the spray water absorb harmful substances in the waste gas to purify the waste gas, and the purified waste gas is discharged from the air outlet.
The spray pump 2, the alkaline sewage treatment tank 3, the circulating pump 4 and the acid liquor storage tank 5 are all arranged outside the washing tower body 1. Wherein, alkaline sewage treatment pond adopts the activated sludge pond that PH is greater than 7, and its water inlet intercommunication liquid storage district 11, and the import of spray pump 2 is then connected to the delivery port, and the shower 15 of one of them one deck packing layer 13 top is then connected to the export of spray pump 2, and the shower 15 of the one deck packing layer 13 top of minimum is connected to this embodiment. The inlet of the circulating pump 4 is communicated with the liquid storage area 11, the outlet is connected with the rest of the spraying pipes 15 (except the spraying pipe 15 connected with the spraying pump 2, in this embodiment, the other spraying pipes 15 except the lowest spraying pipe 15 are connected, the outlet of the acid liquid storage tank 5 is connected with the side wall of the washing tower body 1, the connecting point is positioned below the packing layer 13 of the lowest layer and above the liquid storage area 11, the spraying liquid of the liquid storage area 11 is prevented from flowing back to the acid liquid storage tank 5 in normal work, in addition, in order to control the acid liquid adding amount of the acid liquid storage tank 5, the acid liquid storage tank 5 of this embodiment is connected with the side wall of the washing tower body 1 through a pipeline, and a metering pump 51 is arranged on the pipeline.
It is worth mentioning that, this embodiment combines together the characteristic and the scrubbing tower of alkaline sewage treatment pond 3 ingeniously, the alkaline spray liquid that PH is greater than 7 is pumped out from alkaline sewage treatment pond 3 to spray pump 2, get into scrubbing tower body 1 through shower 15 and collect in stock solution district 11, when reaching the volume of settlement, close spray pump 2, circulating pump 4 starts, with leading-in each layer shower 15 of shower water in the stock solution district 11 and packing layer 13, with the waste gas contact from lower supreme circulation, purify waste gas, in operation, the acid class, ammonia class and sulphur class waste gas can be got rid of effectively to the alkaline spray liquid.
After circulating for a certain number of times, spraying liquid impurities become more, the effect is reduced, the spraying liquid impurities are discharged into the alkaline sewage treatment tank 3 for treatment, and the treated alkaline spraying liquid is conveyed into the washing tower body 1 through the spraying pump 2 for reuse. Through this kind of mode, on the one hand directly utilized the basicity of basicity sewage treatment pond 3 to the splendid purifying effect of acidics, amines and sulphur class waste gas, on the other hand directly handles the spray solution of cyclic utilization many times through basicity sewage treatment pond 3, thereby has avoided still need earlier when conventional scrubbing tower changes the spray solution to arrange the condition that influences scrubbing tower work efficiency with spray water again.
When the washing tower works for a long time, an alkaline film is easily formed on the packing layer 13, so that the purification effect of the packing layer 13 is reduced, and the cleaning effect of the film is not good by the conventional clean water. Therefore, the present embodiment provides an acid storage tank 5. Hydrochloric acid with different concentrations is filled in the acid liquid storage tank 5 according to the alkalinity of the spray liquid and is conveyed into the washing tower body 1 through a pipeline, after a certain amount of hydrochloric acid is reached, the circulating pump 4 is started, the hydrochloric acid is continuously sprayed onto the packing layer 13 through the spray pipe 15, the alkaline coating film is melted, and the removal effect is excellent. Through the combined use of the acid liquor storage tank 5, the circulating pump 4 and the alkaline sewage treatment tank 3, the purification effect on acid, ammonia and sulfur waste gases is greatly improved, and the working efficiency of the washing tower is improved.
In addition, in this embodiment, in the washing tower body 1, the air lifting disc 6 is further installed at a position above the air inlet 14, an air vent is formed in the upward protruding manner of the air lifting disc 6, the exhaust gas entering from the air inlet 14 enters from the lower side of the air lifting disc 6 and flows out from the upper side of the air vent, the laminar flow state is changed into the turbulent flow state, and the exhaust gas is fully contacted with the shower water falling from the upper side, so that the contact area between the exhaust gas and the shower water is increased, and the purification effect is improved. The lifter plate 6 may be of the patent application number: CN201822184802.9, patent name: a cyclone water film dust-removing system and a gas-lifting disc in the patent scheme of a desulfurizing tower are disclosed. The gas outlet department on 1 top of scrubbing tower body then is equipped with defroster 7, can absorb "fog" that has certain moisture, sulphuric acid and sulfur dioxide in the gas and get rid of, further improves the purifying effect to waste gas.
In conclusion, the waste gas washing tower of this embodiment is splendid to the purifying effect of acidics, ammoniacs and sulphur class waste gas, and can handle washing tower filler and washing liquid automatically for self work efficiency improves greatly.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides an exhaust gas washing tower, includes scrubbing tower body (1), scrubbing tower body (1) is including washing district (12) and liquid storage district (11) that are located scrubbing tower body (1) lower part, be equipped with packing layer (13) in washing district (12), be equipped with air inlet (14), its characterized in that on scrubbing tower body (1) lateral wall of packing layer (13) below: the device also comprises a spray pump (2), an alkaline sewage treatment pool (3), a circulating pump (4) and an acid liquor storage tank (5); a water inlet of the alkaline sewage treatment tank (3) is communicated with the liquid storage area (11), a water outlet of the alkaline sewage treatment tank is communicated with an inlet of the spray pump (2), and an outlet of the spray pump (2) is communicated with the washing area (12) above the packing layer (13); the inlet of the circulating pump (4) is communicated with the liquid storage area (11), and the outlet is communicated with the washing area (12) above the packing layer (13); the outlet of the acid liquor storage tank (5) is connected with the side wall of the washing tower body (1).
2. The exhaust gas scrubbing tower of claim 1, wherein: the packing layers (13) are arranged in the washing area (12) from bottom to top in sequence.
3. The exhaust gas scrubbing tower of claim 2, wherein: at least one spray pipe (15) is arranged above each packing layer (13); the outlet of the spraying pump (2) is connected with one layer of spraying pipe (15), and the outlet of the circulating pump (4) is connected with the other spraying pipe (15).
4. The exhaust gas scrubbing tower of claim 3, wherein: the spraying pipe (15) is provided with a plurality of water spraying openings at equal intervals along the length direction.
5. The exhaust gas scrubbing tower of claim 4, wherein: each water jet is provided with a nozzle.
6. An exhaust gas scrubber according to any one of claims 1-5, wherein: the alkaline sewage treatment tank (3) is an activated sludge tank.
7. An exhaust gas scrubber according to any one of claims 1-5, wherein: the outlet of the acid liquor storage tank (5) is connected with the side wall of the washing tower body (1) through a pipeline, and a metering pump (51) is arranged on the pipeline.
8. An exhaust gas scrubber according to any one of claims 1-5, wherein: the air inlet (14) is externally connected with a fan.
9. An exhaust gas scrubber according to any one of claims 1-5, wherein: also comprises an air lifting disc (6); the air lifting disc (6) is arranged in the washing tower body (1) above the air inlet (14).
10. An exhaust gas scrubber according to any one of claims 1-5, wherein: and a demister (7) is arranged at the air outlet of the washing tower body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020400375.8U CN212091649U (en) | 2020-03-25 | 2020-03-25 | Waste gas washing tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020400375.8U CN212091649U (en) | 2020-03-25 | 2020-03-25 | Waste gas washing tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212091649U true CN212091649U (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020400375.8U Active CN212091649U (en) | 2020-03-25 | 2020-03-25 | Waste gas washing tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212091649U (en) |
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2020
- 2020-03-25 CN CN202020400375.8U patent/CN212091649U/en active Active
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